7533121 has 8 divisors (see below), whose sum is σ = 7936704. Its totient is φ = 7135920.

The previous prime is 7533079. The next prime is 7533131. The reversal of 7533121 is 1213357.

It is the 1121-st star number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7533121 - 2¹³ = 7524929 is a prime.

It is a Duffinian number.

7533121 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7533092 and 7533101.

It is not an unprimeable number, because it can be changed into a prime (7533131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 931 + ... + 3991.

It is an arithmetic number, because the mean of its divisors is an integer number (992088).

Almost surely, 2^7533121 is an apocalyptic number.

It is an amenable number.

7533121 is a deficient number, since it is larger than the sum of its proper divisors (403583).

7533121 is a wasteful number, since it uses less digits than its factorization.

7533121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3191.

The product of its digits is 630, while the sum is 22.

The square root of 7533121 is about 2744.6531657024. The cubic root of 7533121 is about 196.0311018949.

Adding to 7533121 its reverse (1213357), we get a palindrome (8746478).

The spelling of 7533121 in words is "seven million, five hundred thirty-three thousand, one hundred twenty-one".